Each Member-elect (other than an incumbent Member reelected to the ensuing Congress) who attends a caucus or conference called under section
29a
(a) of this title, and each incumbent Member reelected to the ensuing Congress who attends any such caucus or conference convening after the adjournment sine die of the Congress in the year involved, shall be entitled to designate one staff person to be paid for one round trip between that person’s place of residence, provided such place of residence is in the district which the Member-elect or incumbent Member represents, and Washington, District of Columbia, for the purpose of accompanying that Member-elect or incumbent Member to such caucus or conference.